
marcom
Authored by Johnmanuel Espinosa
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following scenarios best demonstrates the critical need for visual
signaling under the International Code of Signals?
A ship approaching a port in daylight using VHF for berthing
instructions
A vessel losing radar contact and switching to satellite navigation
A vessel in radio silence transmitting "O" with Aldis lamp during a
crew overboard emergency
A ship requesting weather update from a coastal station using
Navtex
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A vessel uses a flashing light to send a signal. What key factor must be
maintained for the receiver to decode the signal accurately?
Multiple colors
Line-of-sight and timing consistency
Repetition of the signal in 5-minute intervals
Use of infrared wavelength
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which single-letter signal from ICS requires immediate cautionary maneuvering
due to a risk of collision?
M
Q
U
Y
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which Morse signal is most urgent and must be universally understood
regardless of language?
Q
U
SOS
ZULU
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which visual signaling method relies on body positioning and not lights or flags?
Semaphore
Flashlight Morse
IRPCS Rule 27
ICS Alphabetic Panels
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A ship transmits "H" visually. What action should a nearby port authority
anticipate?
Vessel expects assistance
A diver will enter water
Pilot is already onboard
Vessel is in quarantine
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the context of IRPCS, visual signaling is preferred over VHF when:
Transmitting meteorological data
Conducting long-distance convoy
Radios are malfunctioning or prohibited
Performing anchoring drills
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